{ "_id": "6ad5ea947f75c4fbd3a1ee84", "Package": "L0TFinv", "Type": "Package", "Title": "A Splicing Approach to the Inverse Problem of L0 Trend Filtering", "Version": "0.1.0", "Date": "2025-5-25", "Authors@R": "c(person(given = \"Tianhao\",\nfamily = \"Wang\",\nrole = c(\"aut\", \"cre\"),\nemail = \"tianhaowang@mail.ustc.edu.cn\"),\nperson(given = \"Canhong\",\nfamily = \"Wen\",\nrole = \"aut\",\nemail = \"wench@ustc.edu.cn\"))", "Description": "Trend filtering is a widely used nonparametric method for\nknot detection. This package provides an efficient solution for\nL0 trend filtering, avoiding the traditional methods of using\nLagrange duality or Alternating Direction Method of Multipliers\nalgorithms. It employ a splicing approach that minimizes\nL0-regularized sparse approximation by transforming the L0\ntrend filtering problem. The package excels in both efficiency\nand accuracy of trend estimation and changepoint detection in\nsegmented functions. References: Wen et al. (2020)\n; Zhu et al.\n(2020); Wen et al. (2023)\n.", "License": "GPL (>= 3)", "RoxygenNote": "7.3.2", "Encoding": "UTF-8", "VignetteBuilder": "knitr", "URL": "https://github.com/C2S2-HF/InverseL0TF", "NeedsCompilation": "no", "Packaged": { "Date": "2026-10-19 09:55:54 UTC", "User": "root" }, "Author": "Tianhao Wang [aut, cre], Canhong Wen [aut]", "Maintainer": "Tianhao Wang ", "Repository": "https://thaowang.r-universe.dev", "Date/Publication": "2025-06-10 09:38:12 UTC", "RemoteUrl": "https://github.com/cran/L0TFinv", "RemoteRef": "HEAD", "RemoteSha": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "_user": "thaowang", "_type": "src", "_file": "L0TFinv_0.1.0.tar.gz", "_fileid": "https://r2.ropensci.org/7b57dede36965136215728386de110e22fce2b220a0cc774c09bc75190ab425c", "_filesize": 820689, "_sha256": "7b57dede36965136215728386de110e22fce2b220a0cc774c09bc75190ab425c", "_expires": "2027-01-27T10:01:54.000Z", "_created": "2026-10-19T09:55:54.000Z", "_published": "2026-10-19T10:01:56.559Z", "_buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846", "_status": "success", "_host": "GitHub-Actions", "_jobs": [ { "job": 117997774187, "time": 131, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "12177679229" }, { "job": 117997774098, "time": 269, "config": "linux-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "12177138620" }, { "job": 117997774039, "time": 201, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "12178373770" }, { "job": 117997774122, "time": 236, "config": "macos-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "12177043560" }, { "job": 117995592835, "time": 322, "config": "source", "r": "4.6.1", "check": "OK", "artifact": "12177763857" }, { "job": 117997774002, "time": 224, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "12177439839" }, { "job": 117997774082, "time": 99, "config": "windows-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "12178323364" }, { "job": 117997774302, "time": 92, "config": "windows-oldrel-x86_64", "r": "4.5.3", "check": "OK", "artifact": "12177303185" }, { "job": 117997774081, "time": 318, "config": "windows-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "12177834817" } ], "_upstream": "https://github.com/cran/L0TFinv", "_commit": { "id": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "author": "Tianhao Wang ", "committer": "cran-robot ", "message": "version 0.1.0\n", "time": 1749548292 }, "_maintainer": { "name": "Tianhao Wang", "email": "tianhaowang@mail.ustc.edu.cn", "login": "thaowang", "description": "", "uuid": 153406048 }, "_distro": "resolute", "_registered": true, "_dependencies": [ { "package": "ggplot2", "role": "Imports" }, { "package": "Matrix", "role": "Imports" }, { "package": "stats", "role": "Imports" }, { "package": "knitr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" }, { "package": "testthat", "role": "Suggests" } ], "_owner": "cran", "_selfowned": true, "_usedby": 0, "_updates": [], "_tags": [], "_stars": 0, "_contributors": [ { "user": "thaowang", "count": 1, "uuid": 153406048 } ], "_userbio": { "uuid": 153406048, "type": "user", "name": "thaowang", "followers": 0 }, "_downloads": { "count": 284, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/L0TFinv" }, "_devurl": "https://github.com/c2s2-hf/inversel0tf", "_searchresults": 0, "_rbuild": "4.6.1", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/L0TFinv.html", "extra/manual.pdf", "extra/readme.html", "extra/readme.md" ], "_realowner": "thaowang", "_cranurl": false, "_releases": [ { "version": "0.1.0", "date": "2025-06-10" } ], "_exports": [ "DiffMat", "L0TFinv.fix", "L0TFinv.opt", "SimuBlocksInv", "SimuWaveInv", "solMat", "TFmetrics", "XMat" ], "_help": [ { "page": "L0TFinv-package", "title": "A package for L0-regularized sparse approximation", "topics": [ "L0TFinv-package" ] }, { "page": "coef.L0TFinvfix", "title": "Extract estimated trends", "topics": [ "coef.L0TFinvfix", "coef.L0TFinvopt" ] }, { "page": "DiffMat", "title": "Generate a difference matrix", "topics": [ "DiffMat" ] }, { "page": "L0TFinv.fix", "title": "The inverse L0 trend filtering with fixed change points", "topics": [ "L0TFinv.fix" ] }, { "page": "L0TFinv.opt", "title": "The inverse L0 trend filtering with optimal change points", "topics": [ "L0TFinv.opt" ] }, { "page": "plot.L0TFinvfix", "title": "Plot L0TFinvfix or L0TFinvopt object", "topics": [ "plot.L0TFinvfix", "plot.L0TFinvopt" ] }, { "page": "print.L0TFinvfix", "title": "Print L0TFinvfix or L0TFinvopt object", "topics": [ "print.L0TFinvfix", "print.L0TFinvopt" ] }, { "page": "SimuBlocksInv", "title": "Simulate Blocks Data", "topics": [ "SimuBlocksInv" ] }, { "page": "SimuWaveInv", "title": "Simulate Wave Data", "topics": [ "SimuWaveInv" ] }, { "page": "solMat", "title": "Generate the inverse of the crossprod matrix", "topics": [ "solMat" ] }, { "page": "TFmetrics", "title": "Print four metrics about change point detection results", "topics": [ "TFmetrics" ] }, { "page": "XMat", "title": "Generate an artificial design matrix", "topics": [ "XMat" ] } ], "_readme": "https://github.com/cran/L0TFinv/raw/HEAD/README.md", "_rundeps": [ "cli", "cpp11", "farver", "ggplot2", "glue", "gtable", "isoband", "labeling", "lattice", "lifecycle", "Matrix", "R6", "RColorBrewer", "rlang", "S7", "scales", "vctrs", "viridisLite", "withr" ], "_vignettes": [ { "source": "L0TFinv-vignette.Rmd", "filename": "L0TFinv-vignette.html", "title": "L0TFinv Vignette", "author": "Tianhao Wang, and Canhong Wen, University Of Science And Technology Of China", "engine": "knitr::rmarkdown", "headings": [ "Introduction", "Installation", "Tutorial", "Fitting L0-regularized Sparse Models", "Special Structure Matrix", "Simulated Data", "Fitting Models", "Change Point Detection and Trend Estimation", "Visualization", "References" ], "created": "2025-06-10 09:38:12", "modified": "2025-06-10 09:38:12", "commits": 1 } ], "_score": 2.6989700043360187, "_indexed": true, "_nocasepkg": "l0tfinv", "_universes": [ "thaowang", "c2s2-hf" ], "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "0.1.0", "date": "2026-10-19T09:57:44.000Z", "distro": "resolute", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/ccf3b3e2f061bf5f2ca56ee7d5cef8f6da5a7815393e772cf90b8668fb2e0a63", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" }, { "r": "4.6.1", "os": "linux", "version": "0.1.0", "date": "2026-10-19T10:00:01.000Z", "distro": "resolute", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/9b414aa40d4c8f355d317540a36da0c1b4090c4830357394eec4c6ab2ae3e671", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" }, { "r": "4.5.3", "os": "mac", "version": "0.1.0", "date": "2026-10-19T09:58:35.000Z", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/09f68c3871f5fd8ffa6cc28e5765cecb4d846d81086d02f82fc473835ec09124", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" }, { "r": "4.6.1", "os": "mac", "version": "0.1.0", "date": "2026-10-19T09:58:45.000Z", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/1fe869aac5af4656151eb46d55596d71d21f226734298d329310ee5270c58ef6", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" }, { "r": "4.6.0", "os": "wasm", "version": "0.1.0", "date": "2026-10-19T09:59:54.000Z", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/66fe36f3794018612da13e7c808d4236f13c1730892c194c1519af76347cc73a", "status": "success", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" }, { "r": "4.7.0", "os": "win", "version": "0.1.0", "date": "2026-10-19T09:57:03.000Z", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/43936bc81df823a0acce00f42089e3110a44d6be9b360275669d37b65d4c0351", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" }, { "r": "4.5.3", "os": "win", "version": "0.1.0", "date": "2026-10-19T09:57:01.000Z", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/d4cdbb4fc5101a99a58dd1361961149b8821692d60f1d2e63ac9f1dfb3baedf5", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" }, { "r": "4.6.1", "os": "win", "version": "0.1.0", "date": "2026-10-19T10:00:47.000Z", "commit": "b4780ea907256fdfb2c38a0e3e5bae67abb1bdb8", "fileid": "https://r2.ropensci.org/279a167badefad7b40f48608f25ea0f0bb179eb9e4eecda9659dc32ff5fc1e68", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/thaowang/actions/runs/39233065846" } ] }